diff --git a/backend/src/graphql/resolver/UserResolver.test.ts b/backend/src/graphql/resolver/UserResolver.test.ts
index f873fd694..9d78ecb6e 100644
--- a/backend/src/graphql/resolver/UserResolver.test.ts
+++ b/backend/src/graphql/resolver/UserResolver.test.ts
@@ -11,6 +11,7 @@ import { LoginEmailOptIn } from '@entity/LoginEmailOptIn'
 import { User } from '@entity/User'
 import CONFIG from '@/config'
 import { sendAccountActivationEmail } from '@/mailer/sendAccountActivationEmail'
+import { printEmailCodeValidTime } from './UserResolver'
 
 // import { klicktippSignIn } from '@/apis/KlicktippController'
 
@@ -412,3 +413,20 @@ describe('UserResolver', () => {
     })
   })
 })
+
+describe('printEmailCodeValidTime', () => {
+  it('works with 10 minutes', () => {
+    CONFIG.EMAIL_CODE_VALID_TIME = 10
+    expect(printEmailCodeValidTime()).toBe('10 minutes')
+  })
+
+  it('works with 1440 minutes', () => {
+    CONFIG.EMAIL_CODE_VALID_TIME = 1440
+    expect(printEmailCodeValidTime()).toBe('24 hours')
+  })
+
+  it('works with 1410 minutes', () => {
+    CONFIG.EMAIL_CODE_VALID_TIME = 1410
+    expect(printEmailCodeValidTime()).toBe('23 hours and 30 minutes')
+  })
+})
diff --git a/backend/src/graphql/resolver/UserResolver.ts b/backend/src/graphql/resolver/UserResolver.ts
index 9b4fa6fa1..e0aa06a7c 100644
--- a/backend/src/graphql/resolver/UserResolver.ts
+++ b/backend/src/graphql/resolver/UserResolver.ts
@@ -687,9 +687,9 @@ const emailCodeValidTime = (): { hours?: number; minutes: number } => {
   return { minutes: CONFIG.EMAIL_CODE_VALID_TIME }
 }
 
-const printEmailCodeValidTime = (): string => {
+export const printEmailCodeValidTime = (): string => {
   const time = emailCodeValidTime()
   const result = time.minutes > 0 ? `${time.minutes} minutes` : ''
-  if (time.hours) return `${time.hours} hours` + result !== '' ? ` and ${result}` : ''
+  if (time.hours) return `${time.hours} hours` + (result !== '' ? ` and ${result}` : '')
   return result
 }